Ismail, N., Arshad, M. F., Saman, H. M., & Kang, C. W. (2019). Water Treatment Sludge Stabilizer Binder by Waste Paper Sludge Ash for Solidification/Stabilisation Technique. International Journal of Integrated Engineering, 11(1). https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/2460